virtualenv.vim

function! EnableVirtualEnv()
python << EOF
import vim
import os
import sys
if 'VIRTUAL_ENV' in os.environ:
	vim.command('let g:virtualenv_found = 1')
	# enable virtualenv environment within vimruntime
	activate_this = os.path.join(os.environ['VIRTUAL_ENV'], 'bin/activate_this.py')
	if os.path.isfile(activate_this):
		execfile(activate_this, dict(__file__=activate_this))
		vim.command('let g:virtualenv_enabled = 1')
	else:
		vim.command('let g:virtualenv_enabled = 0')

	# allow to have custom vimrc per virtualenv
	vimrc = os.path.join(os.environ['VIRTUAL_ENV'], '.vimrc')
	if os.path.isfile(vimrc):
		vim.command('source %s' % vimrc)
		vim.command('let g:virtualenv_vimrc = 1')
	else:
		vim.command('let g:virtualenv_vimrc = 0')
else:
	vim.command('let g:virtualenv_found = 0')
EOF
endfunction

call EnableVirtualEnv()